Band



Patented May l7, 1935 Y.

John DiLane, Boston, Mass., assignor-to vRalph f liv-Wilma Serial No.687,051. -tion May 5, 1934,

Melrose, Masa Original application' filed September' 2,

. Divided andV this applica- Serial Nl'o. "724,12'1l This inventionrelates to bands of nexibie' material and more especially to paper bandsproperly folded condition, to coniineistacltsV of paper sheets, or tobind other articles into a bundle or in the desired array,` the presentapplication'being a division of my application Serial No. 687,951, ledSeptember 2, 41933. In accordance with the present invention, I

l0 produce a band carrying on opposite faces of;

its opposite end portions coatings whichjare rmly cohesive even underlight pressure, but

which are practically non-adhesive with the uncoated surface of thepaper or other flexible brous fabric of which the band may consist orwith the uncoated surfaces of such ordinary objects as wood, glass,metal, etc. This means that when the band is put around the body to beconfined and its end portions are brought together under pressure inoverlapping ccntactual relationship, the desired binder is formed. Thismeans further that the bands can be piled directly on top of one anotherto form a convenient package for storage and shipment and from which thebands may be successively removed without any trouble on `account ofblocking or sticking together.

With the foregoing and other features and objects in view, my inventionwill now be described in greater detail with particular reference to theaccompanying drawing, wherein,-

Figure 1 illustrates in perspective a coated band embodying myinvention.

Figure v2 shows in perspective a package of such bands, the outerwrapper for the package being partly removed.

Figure 3 depicts a folded shirt to which the band of the'presentinvention has been applied.

For the purpose of producing the coatings on the band of the presentinvention, I preferably use a specially compounded rubber latexcomposition which, when dried, leaves a coating having the qualitiesalready mentioned. There are three main ingredients in the composition,namely, rubber latex, a water-soluble colloid compatible with the latexand serving to destroy adhesiveness or tackiness in the dried latex orrubber coating without, however, destroying its cohesiveness, and asmall amount of water-soluble and comparatively non-volatile plasticizerfor the rubber coating also compatible with the latex. When I say that amaterial is compatible with latex, I mean that it doesV not tend tocoagulate the latex so as to impair' u the spreadability of the latex asa smooth, uniform coating. A typical-rubber latex composil-tionanswering well ,the purposes of my invensuch as are used to holdlaundered shirts in.`rl

tion Vmay be prepared by mixing the usual ammonia` preserved latexofcommerce of about 35%' solids c'ontentwith about 25% by volume of s'tiiftapioca. starch-paste or Water-soluble casein paste, and about 2% to 5%4by volume of VThe stiff, Water-soluble paste is not only a diluent whichdoes away with adhesiveness or tackiness in the dried latex or rubbercoating without impairing its cohesiveness, but which increases thethickness or viscosity of the latex-so that a smooth coating of thedesired Vthickness can be had with only a single application of thecomposition, The glycerine beingv conviparatively involatile remainsjinthe dried latex or rubber coating'and preserves it in the desiredcohesive state vover a considerable period of time. Otherwise, the driedcoating wouldpthrough oxidation, soonv lose its cohesiveness.' The'.glycerine also' tends. to keep the coating flexible o rvpliant,offsetting such stiiening effectas comes from theA dried pastecomponent. Itis possible to modify they composition as by using.concentrated lateinarticial latex, or other special form or compound oflatex, by using diluents other than pastes which have the'desiredeflectonA the coating,-

and by using ethylene glycol -or other suitable plasticizing agent forthe rubber; and it is further possible to use rubber compounds or othercompositions other than latex'` compositions .described for the purposelof producing thin flexible coatings having the desired qualities.

As illustrated in Figure v1,"thecoating composition is applied only tofopposite faces of the:l opposite end portions a of v a vband b 'whichmay consist of paper or equivalent flexible fibrous fabric. The rest ofthe band lbeing left bare or uncoated, comparativelylittle.coatingcomposition is used. After the'coatings have been dried and set so as tocausethedesired coalescence 'and drying of the rubberlatexlparticles, asin a current of Warm air, thevba'n'ds .may be piled directly on top ofone another-an'd'putin a Wrapper or carton cfor storagev and shipment,as shown in Figure 2. Inasmuch as the coatings carried by each bandcontact only'v with the bare or uncoated portions of adjacent bands and,

despite their cohesiveness and exposed-[rubber surfaces, are devoid ofadhesiveness,v there -is practically no tendency for the bandsin a pileto stick together.

A band b encompassing the body portionl o1' a i folded shirt d asdepicted in Figure 3 illustrates one of the uses to which the band ofthe present invention may be put. All that need be done 1n rendering theband operative is to bring it around the body of the folded shirt andpress the overlapping end portions together by hand so as to cause thecoatings to cohere to each other.

The principles of the present invention extend to .the coating only ofopposite faces of the side portions of bands of paper or other flexiblematerial in those instances when the bands are used in such a way thatthe side portions, rather than the end portions, are brought together inoverlapping contactual relationship to form a. binder or wrapper forencompassing a body or a number of articles. Accordingly, I shall forconvenience use the expression opposite marginal portions in theappended claims in describing bands wherein opposite faces of oppositemarginal portions are coated as hereinbefore described, irrespective ofwhether such marginal portions are opposite side portions and/oropposite end portions of the bands. I shall use the term band as meaninga rectangular web or sheet of paper or equivalent flexible fibrousfabric of such dimensions as to be usable either as a binder or wrapper.

I am using the term cohesive in the foregoing description and in theappended claims in its strictly technical sense to mean the property ofa material to unite with similar material and the term adhesive in itsstrictly technical sence to mean the property of a material to unitewith dissimilar material.

I claim:-

1. A band of flexible material carrying thin flexible rubber coatingscomprised of dried and 'coalesced rubber latex particles only onopposite faces of opposite marginal portions, said coatings presentingexposed rubber surfaces and being rmly cohesive under pressure butpractically non-adhesive with the uncoated surface of the band.

2. A band of paper carrying thin exible rubber coatings comprised ofdried and coalesced rubber latex particles only on opposite faces ofopposite marginal portions, said coatings presenting exposed rubbersurfaces and being rmly cohesive under pressure but practicallynon-adhesive with the uncoated surface of the band.

JOHN D. LANE.

